/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #ffffff;
    --color-surface: #f8f9fa;
    --color-surface-elevated: #ffffff;
    --color-border: #e2e4e9;
    --color-text: #1a1a2e;
    --color-text-muted: #5c5f6e;
    --color-primary: #6366f1;
    --color-primary-light: #4f46e5;
    --color-accent: #06b6d4;
    --color-gradient-start: #6366f1;
    --color-gradient-end: #06b6d4;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-max: 1140px;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===== Utilities ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 1rem;
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: pointer;
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.logo-mark {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.4rem;
    font-weight: 700;
}

.logo-text {
    font-size: 1rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 180px 0 120px;
    text-align: center;
    overflow: hidden;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-subtitle {
    color: var(--color-text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* ===== About ===== */
.about {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.about-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: border-color var(--transition), transform var(--transition);
}

.about-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.about-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.08));
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    color: var(--color-primary);
}

.about-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.about-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Solutions ===== */
.solutions {
    padding: 100px 0;
}

.product-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 48px;
    overflow: hidden;
}

.product-card + .product-card {
    margin-top: 32px;
}

.product-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.product-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.product-tagline {
    color: var(--color-primary-light);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.product-description {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 28px;
}

/* Product Screenshot */
.product-visual {
    display: flex;
    justify-content: center;
}

.product-screenshot {
    width: 100%;
    height: auto;
    max-width: 480px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--color-text-muted);
    font-size: 1rem;
}

.contact-item svg {
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--color-text);
    transition: color var(--transition);
}

.contact-item a:hover {
    color: var(--color-primary-light);
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 32px 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-content p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-domains {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-domains a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: color var(--transition);
}

.footer-domains a:hover {
    color: var(--color-primary-light);
}

.footer-domains .separator {
    color: var(--color-border);
}

/* ===== Error Page ===== */
.error-page {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-page h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 24px;
        gap: 20px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-card {
        padding: 32px 24px;
    }

    .product-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .product-badge {
        position: static;
        display: inline-block;
        margin-bottom: 20px;
    }

    .footer-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}


/* ===== Scroll Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays for cards */
.about-card:nth-child(2).reveal {
    transition-delay: 0.1s;
}

.about-card:nth-child(3).reveal {
    transition-delay: 0.2s;
}

.about-card:nth-child(4).reveal {
    transition-delay: 0.3s;
}

/* Header scroll state */
.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}